On Tuesday, August 2, 2011, Neil Toronto <<a href="mailto:neil.toronto@gmail.com">neil.toronto@gmail.com</a>> wrote: > Re-routing this email exchange to [racket-dev] for comments. > > Long story short: Jay roped me into replacing the current `plot' module by wrapping a plot library I was working on for my own use. (FWIW, I'm happy to finally contribute something!) Intended features: > > 1. Doesn't depend on an FFI to libplplot > 2. Can automatically place plot area on functions and points > 3. Uses parameters for keyword argument default values > 4. Uses only dc<%> primitives / Is very pretty > 5. Is more flexible (when using the new plot2d and plot3d modules) > > Linux screenshots: > > <a href="http://students.cs.byu.edu/~ntoronto/plot2d.png">http://students.cs.byu.edu/~ntoronto/plot2d.png</a> > <a href="http://students.cs.byu.edu/~ntoronto/plot3d.png">http://students.cs.byu.edu/~ntoronto/plot3d.png</a> > > The first shows off the almost-finished plot2d. It's as fast as the original `plot', and `shade' is twice as fast. Props to Matthew and Linux's foreign drawing libs for making it look so nice. > > The second shows off 3d-plot-area%, which wraps a dc<%> with 3d drawing primitives. The new plot3d will be 1.5x-2x slower, but the new features (e.g. compositing 3d plots, contours) should be worth it. > > I'll push code to github soon, and ask for volunteers to verify that it looks good on Mac and Windows. > > Specific questions > ------------------ > > Matthew: It should look good on Mac and Windows if their drawing libs do subpixel-accurate, high-quality antialiasing. Do they? Yes. > Doug and other heavy `plot' users: What can I add to plot2d and plot3d to make your life easier? > > Noel: Do you happen to have a kernel density estimator implementation that uses FFT or is otherwise more efficient than O(n^2)? Currently, (plot2d (density samples)) works, but is slow on large samples. > > Anyone: Are there any original `plot' features that should *not* be emulated in the new `plot' wrapper module? > > Anyone: Is it easy/possible to manipulate snip%s with, say, a click-and-drag? How about placing edit boxes on them? If it's not hard, I would like to make the 3d plots manipulatable after rendering. Yes. See the docs for snip%. > Neil T > > On 07/30/2011 02:01 PM, Jay McCarthy wrote: >> >> Yup, so that old programs will keep working. >> >> Will you support the line fitting? >> >> Jay >> >> On Sat, Jul 30, 2011 at 1:56 PM, Neil Toronto<<a href="mailto:neil.toronto@gmail.com">neil.toronto@gmail.com</a>> wrote: >>> >>> Sure can! Does "compatible source library" mean a bunch of wrappers for the >>> functions "plot" currently exports? >>> >>> Neil >>> >>> On 07/30/2011 05:49 AM, Jay McCarthy wrote: >>>> >>>> Awesome. We've been wanting to throw it out for a long time. Can you >>>> make a compatible source library too... so we can replace it in the >>>> core? >>>> >>>> Jay >>>> >>>> On Fri, Jul 29, 2011 at 10:35 PM, Neil Toronto<<a href="mailto:neil.toronto@gmail.com">neil.toronto@gmail.com</a>> >>>> wrote: >>>>> >>>>> I've attached a screenshot of what I'm working on. >>>>> >>>>> It's a replacement for Racket's plot module. The plot module has these >>>>> drawbacks: >>>>> >>>>> 1. It's not smart enough to automatically size plots to the things - >>>>> "renderers" - you're plotting. A renderer is only a function that accepts >>>>> an >>>>> image snip, so the plotter can't compute a rectangle that contains it. >>>>> >>>>> 2. It depends on an external library, plplot. >>>>> >>>>> 3. It draws ugly curves because plplot can't draw lines with >>>>> subpixel-accurate endpoints. Also, plplot messes up antialiasing when the >>>>> curves are made of too many lines. Whatever Racket uses doesn't have this >>>>> problem, at least on Linux. >>>>> >>>>> 4. It doesn't use parameters for things for which parameters make sense, >>>>> like the size of the plots. >>>>> >>>>> I could probably alter the plot module for any one or two of these and >>>>> submit patches. For all four, writing a replacement makes more sense. >>>>> >>>>> FWIW, this is related to my research. I've been using R to generate >>>>> plots, >>>>> but it's getting annoying to serialize samples in Racket and then >>>>> unserialize them in R. >>>>> >>>>> Also, Bayesians make a LOT of plots. It's *really* nice to display them >>>>> using image snips. That's very, very cool. >>>>> >>>>> This project feels vacation-y and relaxing. I figure it's because it >>>>> doesn't >>>>> require any more math than linear algebra. :D >>>>> >>>>> Neil > > _________________________________________________ > For list-related administrative tasks: > <a href="http://lists.racket-lang.org/listinfo/dev">http://lists.racket-lang.org/listinfo/dev</a> >